to 100KPa±5KPa in water, immersed in 15 minutes, there are no air bubbles; Or observed for 24 hours, there is no change of air pressure.
Re-encapsulation Performance:
The closures are pressurized up to 100KPa±5KPa in water, immersed in 15 minutes, there are no air bubbles; Or observed for 24 hours, there is no change of air pressure after three times of repeat encapsulation;
Voltage-resistance strength:
Under the effect of 15kv/DC/1min, non-puncture, and no arc-over.
Insulation resistance: